The Weil McLain 383-500-630 Gauge Assembly is a high-precision OEM replacement component engineered specifically for Weil McLain Ultra series boilers

diaphragm/disc assembly

and compatible actuators for your specific system requirements

ideal for monitoring flue gas pressure

The activated charcoal is essential for cleaning up oil breakdown products

Cleveland Controls AFS-305 Switch Els PW 17895 The Weil McLain 383-500-630 GaugeThe Cleveland Controls AFS 305 is a high performance differential pressure switch engineered for precise monitoring of air flow and pressure in commercial HVACR systems. This manual reset air switch features an adjustable set point range from 0. 40" 0. 06" to 12. 0" w. c., making it ideal for clogged filter detection and burner fan supervision. Built with a robust SPDT contact arrangement and a 1 2 PSI maximum pressure rating, the AFS 305 ensures